package com.jomolangma.app.thinkingjava.io;

//: io/PreferencesDemo.java
import java.util.prefs.Preferences;

public class PreferencesDemo {
	public static void main(String[] args) throws Exception {
		Preferences prefs = Preferences
				.userNodeForPackage(PreferencesDemo.class);
		prefs.put("Location", "Oz");
		prefs.put("Footwear", "Ruby Slippers");
		prefs.putInt("Companions", 4);
		prefs.putBoolean("Are there witches?", true);
		int usageCount = prefs.getInt("UsageCount", 0);
		usageCount++;
		prefs.putInt("UsageCount", usageCount);
		for (String key : prefs.keys())
			System.out.println(key + ": " + prefs.get(key, null));
		// You must always provide a default value:
		System.out.println("How many companions does Dorothy have? "
				+ prefs.getInt("Companions", 0));
	}
} /*
 * Output: (Sample) Location: Oz Footwear: Ruby Slippers Companions: 4 Are there
 * witches?: true UsageCount: 53 How many companions does Dorothy have? 4
 */// :~
